Wrapping machine



Ami? 22 1924 3,491,355

P. o. TENGBERG WRAPPING MACHINE Filed May 9. 1925 2 SheetsSheet 1 jyx Inventor?- 6 Ofl 0 J 5/ jwwzfiiw (Y P. O. TENGBERG WRAPPING MACHINE Filed May 9. 1923 2- Sheets-Sheet 2 Jfi 1% wen Z07".-

WM-Z Q 0 y 9 wm/miw A67 6 Patented Apr. 22, ldfi i.

entree TEBKELSEN, @F BGSTON, MASSAGHUSETTQ.

WMYEIETG IdAQlElih-lfia I Application filed Kay 9, 1%28. serial No. cancer.

To aZl whom it may concern:

Be it hown that I, PHILIP O. Tnuoenne, citizen of the United States, residing at Boston, county of Sudolk, State of Massachusetts, have invented a certain new and useful Improvement in Wrapping Machines, of which the following is a specification, reference being bad, therein to the accompanying drawings.

W This invention relates to wrapping machines of the general type shown and described in an application for Letters Patent, filed June 21, 1921, by George W. Prouty, Serial No. 479,410, and adapted primarily for wrapping annular objects, such, for example, as automobile tires, coils of wire, etc.

A machine of this type comprises a work support by which the object to be wrapped is gradually turned, an annular shuttle 39 which is rotated about the work as the latter is moved therethrough, a reel or the like removed from the shuttle for suppl ing to the latter wrapping material in the eras of a continuous strip which is wrapped about 25 the shuttle as the latter is rotate to wrap said strip about the work, and cuttmg mechanism between the shuttle and the source of supply for severing the strip of wraping material after a suficient quantity 39 thereof has been wrapped upon the shuttle to complete the wrapping of a given ob- 'ect.

J The present invention has for its object to provide an improved brake mechanism for 35 the reel which carries the wrapping material, said brake mechanism being connected with and controlled and operated by the cutti mechanism in such manner that when t e latter is operated to seyer the strip,

643 the rotation of the reel is stopped, thereby preventing the unnecessary unwlnding oi wrapping material from the reel due to the momentum of the latter.

The foregoin and other objects of the 45 invention, toget er with means whereby the same may be carried into efiect, will best be understood from the followmg descrlption of one form or embodiment thereot illustrated in the accompanying drawings.

5g It will be understood, however, that the particular construction described and shown has been chosen for illustrative pu ses mereg, and that the invention, as de ed by the me hereunto apmnded, may be otherwise practiced without departure from its spirit and scope.

In said drawings:

Fig. 1 is a front elevation of the complete machine.

Fig. 2 is an enlarged plan view showing the strip cutting or severm mechanism, the reel brake and tensioning device.

Fig. 3 is an enlarged sectional view taken substantially on the line 3-3, Fig. 1, showing the reel brake construction.

The frame of the machine comprims a base and a yoke 16 which is pivotally mounted on a shaft 17 journalled in an u right 18 rising from the base 15. The yo e 16 is provided-with guide rollers 19 for an annular shuttle 20 which is rotated by a driving member in the form of a friction disk 21 secured to the shaft 17 and driven through connections (not shown in detail) under the control of a starting treadle 22 from an electric motor 23. The tire or other work W to be wrapped is held by a wei hted roller 14 upon work supporting r0 lers 24 (only one of which is shown in Fig. 1) which are driven through connections generally indicated at 25 from the motor 23, the arrangement being such that the work W will be turned relatively slowly with respect to the speed of rotation of the shuttle 20. Said shuttle is formed with a hinged segment 26 normally closing a gap through which the work W may be inserted, while the yoke 16 may be adjusted about the axis of the shaft 17 to center the shuttle 20 with I respect to annular objects of difi'erent sizes,

said yoke being counterbalanced by a spring 27 and being locked in adjusted position by means of a clamp 28 on an upright 29 rising from the base 15.

The wrapping material, preferably in the form of a continuous strip S of (paper, is supplied from a roll 30 an porte by a reel, hereinafter described in etail, carried 'by the yoke 16. Said paper passes from the roll 30 over a tension device 32, thence through a folding device designated as a whole in Figure 1 by the numeral 38, and thence over a guide p ate 34 to the shuttle 20. Said shuttle 20 comprises an annulus having on one face a circular series of rollers .35 about which the strip S is wrap ed when the shuttle is rotated, said strip ing fed from the shuttle about a guide roller 36 to the work W. Between the shuttle 20 and the source of supply 30 there is provided a cutting mechanism comprising a knife 37 cooperating with a portion of the guide plate 3 to sever the strip S when a Sllfilcient length thereof has been wound around the shuttle rollers 35 to complete the wrapping of the work W. The knife 37 is automatically actuated, as hereinafter more fully explained, after a predetermined number of rotations of the driving disk 21, by a measuring mechanism actuated at each rotation of said driving disk by a cam projection 39 thereon, said measuring mechanism being manually adjustable in accordance with the size of the articles wrapped.

From the foregoing the purpose, relative location, and function of the several instrumentalities of the machine will be sutiiciently understood for the purpose of the present case. With .the exception of those hereinafter mentioned, and in so far as the others enter into combination therewith, as point ed out in the claims, these parts may be of any suitable construction and arrangement.

Referring now to Figures 1 and 2, themeasuring and cutting mechanism, as herein shown, comprises the following construction and arrangement of parts. Mounted on a stud 81 secured to the yoke 16 is a sleeve 90. A disk 7 9 and a ratchet wheel 80 are secured to the sleeve 90 at opposite ends thereof so as to rotate together with the said sleeve. The disk 79 is provided with a circumferential series of equally spaced holes 72. An adjusting member 74 is rotatably mounted on the sleeve 90 and is provided with a projecting handle 70 for use in the adjustment of the measuring device, said adjusting member 74 having adjacent the disk 79 a removable locking pin 71 which may be fitted by the operator into any one of the holes 72 in said disk. The knife 37 is carried by an arm 73 on a hub 65 mounted to turn on a stud 85 projecting ifrom the yoke 16. The adjusting member 74 is provided with another pin 82 adapted to contact with a second arm 67 on the hub 65 and thereby actuate the knife 37. A pawl 78, to progressively rotate the ratchet wheel 80, is carried by a bell crank 76 pivoted to the yoke 16 and provided with a roller 77 adapted to be engaged bv the cam projection 39 on the shuttle driving disk 21. The ratchet whml is thereby moved one tooth for each rotation of the driving-disk 21. A detent pawl 75 is pivoted to the arm 67 to prevent the ratchet wheel 80 and its associated parts from rotatin in the opposite direction when the pawl 7 8 is not engaged with the said ratchet wheel. The pawls 78 and 75 are each pro vided with a spring 9 to hold them in con tact with the ratchet wheel. pin 1 pro jects from the member 67 and is adapted to engage and release the pawl 75 at each ee= menace tuation of the lmife. A pin 5 projects from the actuating pawl 78 and is engaged by an arm 6 secured to the hub 65 so as to also en gage and release the pawl 78 when the knife is actuated.

In operation, the adjusting member 74 is positioned by means of the handle 70, and the locking pin 71 placed in one of the holes 72 on the disk 7 9, the location of the pin 71 with respect to the disk 79 depending on the amount ofwrapping material necessar for the particular work to be wrapped. l hen the machine is started, the ratchet wheel 80 will be moved, tooth by tooth, until the pin 82 contacts with the arm 67, forcing the latter downward. The arm 67 in turn causes the hub 65 to turn on the stud 85, thus actuating the knife 37 and severing the stri S. When the member 67 is thus actuate the pawl 75 will be moved from engagement with the ratchet wheel 80 bythe pin 4, projecting from the arm 67, and the pawl 78 will also be moved from its engagement with the said ratchet wheel by the engagement of the arm 6 with the pin 5. It will be seen that the pawls 75 and 78 are kept out of engagement with the ratchet wheel 80, while the arm 67 and its associated parts are in the cutting position. The operator can then return the ratchet wheel 80, perforated disk 79, and adjusting member 74, as a unit, by anti-clockwise movement, to their former and adjusted position without readjusting the member 74 with respect to the perforated disk 79. The several parts may then be returned to their former positions for the beginning of a new wrapping operation by raising the arm 73.

The reel, shown enlarged in Figures 2 and 3, which carries the roll of wrapping material 30, comprises a sleeve rotatably mounted on a stud 51 secured to the yoke 16. In order to prevent the unnecessary unwinding of the wrapping material from the reel, due to the momentum of the latter after the cutting mechanism has operated to sever the said material, brake mechanism of the following construction is provided in con junction with the said reel. Cam members and 61 are positioned on the stud 51 adjacent one end of the sleeve 50. The cam member 60 has a cam surface on one end 00-.

ber 61 is fixed with relation to the shaft 51,

while the member 60. has a limited movement with respect thereto. Attached to the cam member 60 by a pin 63 is a link 62 connected with a third arm 66 on the hub 65, so as to be operated when the knife 37 is operateld to sever the strip of wrapping materia' menace In operation, the link 62 is moved to the left by the measuring and cutting mechanism when the latter is actuated. The cam surface of the cam member 60 is therefore raused to bear against the cam surface of the member 61 and the opposite end of the cam member 60 is thereby pressed against the sleeve 50, applying a braking action to said sleeve and resisting its further rotation upon the stud 51.

Having thus described my invention, I claim: J

1. In a wrapping machine, a reel to carry a roll of wrapping material to be fed to the work, said reel comprising a sleeve and a stud secured to the frame of said machine and on which said sleeve is rotatably mounted, an automatically actuated brake for said reel mounted on said stud, said brake having cooperating cam members, and actuating means controlled by the wrapping operation of the machine and operate at a predetermined time during said wrapping 0 eration for moving one of said cam mem ers with respect to the other.

2. In a wrapping machine, automatic measuring and cutting mechanism for the wrapping material to e fed to the work, a reel to carry a roll of said wrapping material, said reel comprising a sleeve, a stud secured to the frame of said machine and on which said sleeve is rotatably mounted, an automatic brake for said reel mounted on said stud, said brake comprising a fixed cam member secured to the frame of the machine and a movable cooperati cam member, and means connecting sai movable cam member and said automatic meuring and cutting mechanism for rotating said movable cam member on said stud when the wrapping material is out.

3. In a machine of the class described, a reel to carry a roll of wrapping material to be fed to the work, said reel comprisin a stud secured to the frame of said machine and a sleeve rotatably mounted on said stud, a brake for said reel mounted on said stud, said brake comprising cooperating cam members, cutting mechanism to sever said wrapping material at a predetermined point in the operation of the machine, and a con nection between said cutting mechanism and brake to rotate one of said cam members with respect to the other.

is In a wrapping machine, means for feeding a strip of wrapping material to the work, a reel to carry a roll of said wrapping material, said reel comprising a studand a sleeve rotatably mounted thereon, a brake for said reel comprising coo'ratin cam members mounted on said stu, a hu having an arm, measuring mechanism for, turning said hub at a predetermined time, a knife on said arm for cuttingsaid strip,/ and a connection between said hub and reel brake for relatively rotating said cam members when said hub is turned.

In testimony whereof I afiix my signature.

PHILIP O. TENGBERG. 

